Card battery having smart card functions

Abstract

Disclosed is a card type battery that has both functions of a smart card and a battery. The card battery can prevent a short caused by contact with an external device, reduce a total thickness of the battery and improve bonding strength between internal elements of the battery.

What is claimed is: 
     
       1. A card battery having a smart card function, comprising:
 a battery cell, wherein the battery cell is a bare cell comprising first and second electrode tabs, an electrode assembly, and a pouch surrounding the electrode assembly; 
 a protection circuit module comprising first and second lead plates respectively electrically coupled to the first and second electrode tabs of the battery cell; 
 a frame receiving the battery cell and protection circuit module; 
 a first cover provided on the frame; 
 a second cover provided under the frame; and 
 an IC chip is provided on the first or second cover and connected to the protection circuit module, 
 wherein the protection circuit module comprises: 
 a substrate; 
 a protection circuit unit provided on the substrate; and 
 a charging/discharging terminal that is provided on the substrate and electrically coupled to the protection circuit unit, 
 wherein an upper surface of the charging/discharging terminal is lower than an upper surface of the first cover, 
 wherein the protection circuit module operates and processes information with the IC chip, 
 wherein the protection circuit module further comprises an insulation layer provided on the substrate and abuts the side surface of the charging/discharging terminal, 
 wherein the upper surface of the charging/discharging terminal is lower than an upper surface of the insulation layer, 
 wherein the protection circuit module comprises a terminal cover configured to be opened when the charging/discharging terminal is connected to an electronic device, 
 wherein the electrode assembly comprises: 
 a first electrode plate; 
 a second electrode plate; and 
 a separator, and 
 wherein the electrode assembly is formed by interposing the separator between the first and second electrode plates and winding them together in a jelly-roll type. 
 
     
     
       2. The card battery of  claim 1 , wherein the substrate is formed of a flexible printed circuit board (FPCB). 
     
     
       3. The card battery of  claim 1 , wherein a magnetic strip is provided on the first or second cover, wherein the magnetic strip is configured to store information. 
     
     
       4. The card battery of  claim 1 , wherein a double-coated adhesive layer is provided between the battery cell and the first cover, and between the battery cell and the second cover respectively. 
     
     
       5. The card battery of  claim 1 , wherein a terminal hole is formed at a position corresponding to the upper surface of the charging/discharging terminal. 
     
     
       6. A card battery having a smart card function, comprising:
 a battery cell, wherein the battery cell is a bare cell comprising an electrode assembly and a pouch surrounding the electrode assembly; 
 a protection circuit module electrically coupled to the battery cell; 
 a frame receiving the battery cell and protection circuit module; 
 a first cover, provided on the frame, being made of metal; 
 a second cover, provided under the frame, being made of metal; and 
 an IC chip is provided on the first or second cover and connected to the protection circuit module, 
 wherein a groove is formed on an outer surface of the first or second cover in a direction of a long edge of the cover, 
 wherein the protection circuit module operates and processes information with the IC chip, 
 wherein a magnetic strip is seated in the groove, 
 wherein the protection circuit module comprises: 
 a substrate; 
 an insulation layer; 
 a charging/discharging terminal; and 
 a terminal cover configured to be opened when the charging/discharging terminal is connected to an electronic device, 
 wherein the upper surface of the charging/discharging terminal is lower than an upper surface of the insulation layer, 
 wherein the electrode assembly comprises: 
 a first electrode plate; 
 a second electrode plate; and 
 a separator, and 
 wherein the electrode assembly is formed by interposing the separator between the first and second electrode plates and winding them together in a jelly-roll type. 
 
     
     
       7. The card battery of  claim 6 , wherein the first or second cover is formed of stainless steel. 
     
     
       8. The card battery of  claim 6 , wherein the depth of the groove is the same as a thickness of the magnetic strip. 
     
     
       9. The card battery of  claim 6 , wherein the protection circuit module further comprises:
 a protection circuit unit provided on the substrate; 
 the charging/discharging terminal, provided on the substrate, being located at one side of the card battery; 
 a first lead plate, provided on the substrate, being electrically coupled to the first tab of the battery cell; and 
 a second lead plate, provided on the substrate, being electrically coupled to the second tab of the battery cell. 
 
     
     
       10. The card battery of  claim 9 , wherein the substrate is formed of a flexible printed circuit board. 
     
     
       11. A card battery having a smart card function, comprising:
 a battery cell, wherein the battery cell is a bare cell comprising an electrode assembly and a pouch surrounding the electrode assembly; 
 a protection circuit module electrically coupled to the battery cell; 
 a frame receiving the battery cell and protection circuit module; 
 a first cover provided on the frame; 
 a second cover provided under the frame; 
 a first thermal bonding layer provided between an edge of an inner surface of the first cover and an edge of a first surface of the frame; and 
 an IC chip is provided on the first or second cover and connected to the protection circuit module, 
 wherein the protection circuit module operates and processes information with the IC chip, 
 wherein the protection circuit module comprises: 
 a substrate; 
 an insulation layer; 
 a charging/discharging terminal; and 
 a terminal cover configured to be opened when the charging/discharging terminal is connected to an electronic device, wherein the upper surface of the charging/discharging terminal is lower than an upper surface of the insulation layer, 
 wherein the electrode assembly comprises: 
 a first electrode plate; 
 a second electrode plate; and 
 a separator, and 
 wherein the electrode assembly is formed by interposing the separator between the first and second electrode plates and winding them together in a jelly-roll type. 
 
     
     
       12. The card battery of  claim 11 , further comprising a second thermal bonding layer provided between an edge of an inner surface of the second cover and an edge of a second surface of the frame. 
     
     
       13. The card battery of  claim 11 , wherein a double-coated adhesive layer is provided between the battery cell and the first cover, and between the battery cell and the second cover respectively. 
     
     
       14. The card battery of  claim 11 , wherein the protection circuit module further comprises:
 a protection circuit unit provided on the substrate; 
 the charging/discharging terminal, provided on the substrate, being located at one side of the card battery; 
 a first lead plate, provided on the substrate, being electrically coupled to the first tab of the battery cell; and 
 a second lead plate, provided on the substrate, being electrically coupled to the second tab of the battery cell.